In patent practice, there are various cases when any person who has familiarized himself with the publicly available information about a patent, for any reason, does not agree with the opinion of the patent office. In such situations, a person can send a written objection to the grant of a patent, which will fully reflect the reasons for such disagreements, and provide arguments and arguments in defense of his position.
There are also situations where an existing patent is an obstacle to commercial activity. In such situations, revocation of the obstructive patent can also be effective.
In case of unlawful cancellation of the patent, the copyright holder can file a counterclaim to a higher authority, where an additional check of all the circumstances of cancellation will be carried out.